nah. I just don't see it being covered in another Avengers movie. Tom is more than likely done with Avengers movies. Thanos will appear in multiple films. I would be shocked if Loki appears in another Avengers movie. I find it very doubtful

There are three or four long-ish conversations about how bad Loki's punishment is going to be in Avengers. That isn't material they aren't going to cover in the sequels.